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NLN PAX/NEX SCIENCE STUDY Exam Questions
Comprehensive 2026 Questions Exam Latest Version
Solved Questions & Answers Verified 100 %
To sterilize a metal probe in the office, a dentist could use a steam sterilizer. If
unavailable, the next most effective method to sterilize the instrument would
be
boiling it in water for 15 minutes
dipping it into a concentrated acid solution
heating it in a hot air oven at 160 * C for 20 minutes
washing it in soap and water
boiling it in water for 15 minutes
Heat energy is absorbed in which of these phase changes?
Br2 (l) -> Br2 (s)
Br2 (g) -> Br2 (l)
Br2 (l) -> Br2 (g)
Br2 (g) -> Br2 (s)
Br2 (l) -> Br2 (g)
The atoms of an element with seven valence electrons are most classified as
metals
nonmetals
metalloids
noble gas
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non metals
The organ that filters metabolic waste from the blood is the
kidney
liver
small intestine
stomach
kidney
Which of these conditions is associated with smoking
esophageal varices
tonsillitis
emphysema
blindness
emphysema
Which of these equations best illustrates a synthesis reaction?
NaOH + HCl -> NaCl + H2O
2Na +Cl2 -> 2NaCl
2H2O2 -> 2H2O + O2
CH4 + 2O2 -> CO2 + 2H2O
2Na + Cl2 -> 2NaCl
Which of these pairs of units measures the same quantity?
Newton and watt
Joule and Newton
Calorie and Joule
Watt and Calorie
Calorie and Joule
Which of these processes is responsible for the recorded production of CO2
by yeast cells from sugar solution
photosynthesis
Anaerobic respiration
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Translocation
Capillary action
Anaerobic respiration
Which of these quantities is most closely associated with an object's inertia?
Weight
Energy
Power
Mass
Mass
Which of these substances contains a nonpolar covalent bond
NaCl
HBr
O2
NH3
O2
Which of these temperatures is known as Absolute Zero?
0*C
0K
positive 273 * C
negative 273 K
0K
Which part of the cell structure controls the passage of materials into and out
of the cell
Golgi apparatus
Ribosome
Nuclear Membrane
Plasma Membrane
Plasma Membrane
While working in the chemistry laboratory, a student spills dilute hydrochloric
acid on her hand. What is the first action this student should take?
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Pour sodium hydroxide on her hand in order to neutralize the acid
Flush her hand with large quantities of water
Notify her laboratory partner of the accident
Dry her hand thoroughly with a paper towel
Flush her hand with large quantities of water
Within a living cell, the oxygen (O2) from a mixture of O2 and carbon dioxide
(CO2) is used up. This creates a concentration gradient across the cell
membrane, drawing O2 across the membrane from the outside in, a process
known as
Osmosis
Active Transport
Diffusion
Cellular Respiration
Diffusion
Within which of these structures of the female reproductive tract is the human
egg fertilized?
Uterus
Fallopian Tube
Vagina
cervix
Fallopian Tube
You cut your finger rather deeply while slicing an apple. Which of these
actions should you take first?
Apply a sterile adhesive bandage
Press the cut surface to stop the flow of blood
Swab the wound with mild antiseptic
Wash the wound continuously with cold running water
Wash the wound continuously with cold running water
A lens that focuses distant light to a single point is known as a
NLN PAX/NEX SCIENCE STUDY Exam Questions
Comprehensive 2026 Questions Exam Latest Version
Solved Questions & Answers Verified 100 %
To sterilize a metal probe in the office, a dentist could use a steam sterilizer. If
unavailable, the next most effective method to sterilize the instrument would
be
boiling it in water for 15 minutes
dipping it into a concentrated acid solution
heating it in a hot air oven at 160 * C for 20 minutes
washing it in soap and water
boiling it in water for 15 minutes
Heat energy is absorbed in which of these phase changes?
Br2 (l) -> Br2 (s)
Br2 (g) -> Br2 (l)
Br2 (l) -> Br2 (g)
Br2 (g) -> Br2 (s)
Br2 (l) -> Br2 (g)
The atoms of an element with seven valence electrons are most classified as
metals
nonmetals
metalloids
noble gas
, Page 2 of 38
non metals
The organ that filters metabolic waste from the blood is the
kidney
liver
small intestine
stomach
kidney
Which of these conditions is associated with smoking
esophageal varices
tonsillitis
emphysema
blindness
emphysema
Which of these equations best illustrates a synthesis reaction?
NaOH + HCl -> NaCl + H2O
2Na +Cl2 -> 2NaCl
2H2O2 -> 2H2O + O2
CH4 + 2O2 -> CO2 + 2H2O
2Na + Cl2 -> 2NaCl
Which of these pairs of units measures the same quantity?
Newton and watt
Joule and Newton
Calorie and Joule
Watt and Calorie
Calorie and Joule
Which of these processes is responsible for the recorded production of CO2
by yeast cells from sugar solution
photosynthesis
Anaerobic respiration
, Page 3 of 38
Translocation
Capillary action
Anaerobic respiration
Which of these quantities is most closely associated with an object's inertia?
Weight
Energy
Power
Mass
Mass
Which of these substances contains a nonpolar covalent bond
NaCl
HBr
O2
NH3
O2
Which of these temperatures is known as Absolute Zero?
0*C
0K
positive 273 * C
negative 273 K
0K
Which part of the cell structure controls the passage of materials into and out
of the cell
Golgi apparatus
Ribosome
Nuclear Membrane
Plasma Membrane
Plasma Membrane
While working in the chemistry laboratory, a student spills dilute hydrochloric
acid on her hand. What is the first action this student should take?
, Page 4 of 38
Pour sodium hydroxide on her hand in order to neutralize the acid
Flush her hand with large quantities of water
Notify her laboratory partner of the accident
Dry her hand thoroughly with a paper towel
Flush her hand with large quantities of water
Within a living cell, the oxygen (O2) from a mixture of O2 and carbon dioxide
(CO2) is used up. This creates a concentration gradient across the cell
membrane, drawing O2 across the membrane from the outside in, a process
known as
Osmosis
Active Transport
Diffusion
Cellular Respiration
Diffusion
Within which of these structures of the female reproductive tract is the human
egg fertilized?
Uterus
Fallopian Tube
Vagina
cervix
Fallopian Tube
You cut your finger rather deeply while slicing an apple. Which of these
actions should you take first?
Apply a sterile adhesive bandage
Press the cut surface to stop the flow of blood
Swab the wound with mild antiseptic
Wash the wound continuously with cold running water
Wash the wound continuously with cold running water
A lens that focuses distant light to a single point is known as a
